Download - Enhancing a library OPAC with linked data
Enhancing an OPAC using linked data in MARC records
ELUNA 2016 Oklahoma City
ExLibris Users of North America
Oklahoma City, OK
May 2016
Presented by
Michael Cummings
Library Systems Coordinator
GWU Libraries
HTML markup in web pages
The semantic web
Google Trends
Trend: ‘linked data’ vs ‘semantic web’
Schema.org
Theory
https://searchenginewatch.com/2016/02/25/say-goodbye-to-google-14-alternative-search-engines/
HTML markup in web pages
In practice: an example
findit.library.gwu.edu/isbn/9780716703389
Schema.org microdata markup
Markup, generated on-the-fly
Google search
Catalog record in Google search result
Custom Google Search form
Custom Google search form and results
reports.library.gwu.edu/customsearch.html
new horizons in astronomy
Creating the custom search
Experiment: Build a Google search form
https://cse.google.com
Custom search coding
??????????????
Embedding the custom search form
view-source:reports.library.gwu.edu/customsearch.html
2. Hyperlinks on MARC data
Voyager-l informal survey
Informal survey of Voyager-l
Voyager-l informal survey
Informal survey of Voyager-l
About our web applicaton
Beyond semantic markup
OCLC linked data: Identities
Brandt, John C.
Publication timeline, list of works, related names and subjects
Use case: add value: WorldCat Identities
findit.library.gwu.edu/oclc/327452
OCLC Identity example
Overview, Timeline, Alternate names …
1 of 4
www.worldcat.org/wcidentities/lccn-n50012763
OCLC Identity example
Works by or about the author …
2 of 4
OCLC Identity example
Audience, Related Identities, Links …
3 of 4
OCLC Identity example
… and Associated Subjects word cloud.
4 of 4
Identities links in the web application
Links on our MARC records
STEP #1 Add URIs to local MARC records
findit.library.gwu.edu/item/2659054.json
“0”: http://id.loc.gov/authorities/names/n82076128”
“o”: http://worldcat.org/entity/work/id/1419206”
Converting links
STEP #2 convert name to ID link
See: https://github.com/gwu-libraries
Publishing links in our API
#3 Output link text and associated URI
See: http://findit.library.gwu.edu/api/
Adding links with MarcEdit
Catalog record before editing
Original local Voyager catalog record
Adding links with MarcEdit
New in MarcEdit: MarcNext
See: http://marcedit.reeset.net/
MarcEdit build linked records
MarcNext: Link Identifiers: Build links
Links generated by MarcEdit
Revised local Voyager Marc record
$a Levin, Murray Burton.
$0 http://id.loc.gov/authorities/names/n80034895
$0 http://viaf.org/viaf/170682523
OCLC Workid
Example: URI for OCLC’s Work ID
$n OCLC Work Id
$o http://worldcat.org/entity/work/id/62586849
URIs on MARC tags in Voyager
Count of URIs on GW’s local Marc records
https://github.com/gwu-libraries/notebooks/blob/master/20151026-marc-subjects-spark/subject-patterns-with-spark.ipynb
Two experiments with linked data
Experiment: Display the links
#1 Links displayed with labels . . .
Experiment: Display the links
Cancelled before going into live site.
Experiment: Display the links
#2 Use case: get alternate names
1 of 3
Experiment: Display the links
and use labels from the model . . .
2 of 3
Experiment: Display the links
. . . however, how fast can we process it?
3 of 3
Ex Libris and linked data
ExLibris support for linked data
Ex Libris prototype
going in the wrong direction.
Bibframe / data model
Bibframe: Library of Congress
A model for expressing & connecting
bibliographic data
www.loc.gov/bibframe/
Zepheira, NLM, UC-Davis, GW
Testing bibframe with library data
bibfra.me/about/
RDF
Bibframe version of MARC record
bibframe.org/tools/compare/bibid/17930908
OCLC
Turtle | N-Triple | JSON-LD | RDF/XML
Available formats / APIs include RDF
Future Bibframe / RDF developments
Going forward: obstacles
Experimentation and evaluation
https://ecommons.cornell.edu/handle/1813/42435
Going forward: modelling
Creating linked data repositories
Going forward: programming
Open source tools to try out. pybibframe
https://github.com/zepheira/pybibframe
Converting MARC/XML to RDF or Versa output (command line)
or
Converting MARC/XML to RDF or Versa output (API)
Learn More
Michael Cummings
Library Systems Coordinator
202-994-4806 [email protected]
Miller, E., & Ogbuji, U. (2015). Linked data design for the visible library. Bulletin of the American Society for Information Science and Technology (Online), 41(4), 23-29. Retrieved from http://proxygw.wrlc.org/login?url=http://search.proquest.com/docview/1679220450? accountid=11243
Mitchell, E. T., PhD. (2016). The current state of linked data in libraries, archives, and museums. Library Technology Reports, 52(1), 5-16,2. Retrieved from http://proxygw.wrlc.org/login?url=http://search.proquest.com/docview/1752517266?accountid=11243
Shieh, J. (2013, Winter). A transformative opportunity: BIBFRAME at the George Washington University,
an early experimenter. Information Standards Quarterly,25, 17-21. Retrieved from
http://proxygw.wrlc.org/login?url=http://search.proquest.com/docview/1545644349?accountid=11243
The Relationship between BIBFRAME and OCLC’s Linked-Data Model of Bibliographic Description: A
Working Paper http://www.oclc.org/content/dam/research/publications/library/2013/2013-05.pdf
Photo credits
Michael Cummings
Library Systems Coordinator
202-994-4806 [email protected]
Slide 1: Buffalo sketch
https://www.pinterest.com/pin/390194755188382990/
Juan Bosco / San Martin Arts Crafts
Slide 4: Oklahoma state bird: Scissor-tailed flycatcher in flight
http://www.birdsasart-blog.com/2012/07/13/you-be-the-judge-flight/
Slide 13: Lone buffalo in tall grass
https://upload.wikimedia.org/wikipedia/commons/thumb
/e/e7/Buffalo_American_animal.jpg/1024px-Buffalo_American_animal.jpg
Slide 22: Scenic turnout, near Arbuckle Mountains.
http://www.travelok.com/scenic_drives
Bill Bryant
Slide 26: Indian Paintbrush wildflowers near Boynton.
http://www.travelok.com/scenic_drives
Slide 33: Oklahoma's state wildflower, the Indian Blanket, near Davis.
http://www.travelok.com/scenic_drives
Carolyn Fletcher
Slide 41: Group of bison on grassy plain
http://www.nature.org/cs/groups/webcontent/@web/@oklahoma/
documents/media/tallgrass-prairie-bison-2.jpg
Slide 46: Two bison in snow
Brett French, Billings Gazette